442440204442 has 8 divisors (see below), whose sum is σ = 663693110100. Its totient is φ = 221209167744.

The previous prime is 442440204403. The next prime is 442440204449. The reversal of 442440204442 is 244402044244.

It can be written as a sum of positive squares in 2 ways, for example, as 435743891881 + 6696312561 = 660109^2 + 81831^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 442440204398 and 442440204407.

It is not an unprimeable number, because it can be changed into a prime (442440204449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5416567 + ... + 5497642.

Almost surely, 2^442440204442 is an apocalyptic number.

442440204442 is a deficient number, since it is larger than the sum of its proper divisors (221252905658).

442440204442 is a wasteful number, since it uses less digits than its factorization.

442440204442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10934480.

The product of its (nonzero) digits is 131072, while the sum is 34.

Adding to 442440204442 its reverse (244402044244), we get a palindrome (686842248686).

The spelling of 442440204442 in words is "four hundred forty-two billion, four hundred forty million, two hundred four thousand, four hundred forty-two".